describe('settings', () => {
  describe('fragmentSelection', () => {
    var id = 'testContainer';

    beforeEach(function() {
      this.$container = $(`<div id="${id}"></div>`).appendTo('body');
    });

    afterEach(function() {
      if (this.$container) {
        destroy();
        this.$container.remove();
      }
    });

    /**
     * Returns current text selection or false if there is no text selection
     * @returns {*}
     */
    function getSelected() {
      /* eslint-disable no-else-return */
      var text = '';

      // IE8
      if (window.getSelection && window.getSelection().toString() && $(window.getSelection()).attr('type') != 'Caret') {
        text = window.getSelection();

        return text.toString();

      } else { // standards
        var selection = document.selection && document.selection.createRange();

        if (!(typeof selection === 'undefined') && selection.text && selection.text.toString()) {
          text = selection.text;

          return text.toString();
        }
      }

      return false;
    }

    /**
     * Selects a <fromEl> node at as many siblings as given in the <cells> value
     * Note: IE8 fallback assumes that a node contains exactly one word
     * @param fromEl
     * @param siblings
     */
    function selectElementText(fromEl, siblings) {
      var doc = window.document;
      var sel;
      var range;

      if (window.getSelection && doc.createRange) { // standards
        sel = window.getSelection();
        range = doc.createRange();
        range.setStartBefore(fromEl, 0);
        while (siblings > 1) {
          fromEl = fromEl.nextSibling;
          siblings--;
        }
        range.setEndAfter(fromEl, 0);
        sel.removeAllRanges();
        sel.addRange(range);
      } else if (doc.body.createTextRange) { // IE8
        range = doc.body.createTextRange();
        range.moveToElementText(fromEl);
        range.moveEnd('word', siblings + 1);
        range.select();
      }
    }

    describe('constructor', () => {
      it('should disallow fragmentSelection when set to false', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: false
        });
        selectElementText(this.$container.find('tr:eq(0) td:eq(1)')[0], 3);

        mouseDown(this.$container.find('tr:eq(0) td:eq(3)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(3)'));

        var sel = getSelected();
        expect(sel).toEqual(false);
      });

      it('should allow fragmentSelection when set to true', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: true
        });
        selectElementText(this.$container.find('td')[1], 3);

        mouseDown(this.$container.find('tr:eq(0) td:eq(3)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(3)'));

        var sel = getSelected();
        sel = sel.replace(/\s/g, ''); // tabs and spaces between <td>s are inconsistent in browsers, so let's ignore them
        expect(sel).toEqual('B1C1D1');
      });

      it('should allow fragmentSelection from one cell when set to `cell`', function() {
        var hot = handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: 'cell'
        });
        selectElementText(this.$container.find('td')[1], 1);

        mouseDown(this.$container.find('tr:eq(0) td:eq(1)'));
        mouseOver(this.$container.find('tr:eq(0) td:eq(1)'));
        mouseMove(this.$container.find('tr:eq(0) td:eq(1)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(1)'));

        expect(getSelected().replace(/\s/g, '')).toEqual('B1');
      });

      it('should disallow fragmentSelection from one cell when set to `cell` and when user selects adjacent cell', function() {
        var hot = handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: 'cell'
        });
        selectElementText(this.$container.find('td')[1], 1);

        mouseDown(this.$container.find('tr:eq(0) td:eq(1)'));
        mouseOver(this.$container.find('tr:eq(0) td:eq(2)'));
        mouseMove(this.$container.find('tr:eq(0) td:eq(2)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(2)'));

        expect(getSelected()).toEqual(false);
      });

      it('should disallow fragmentSelection of Handsontable chrome (anything that is not table) when set to false', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: false
        });
        var $div = $('<div style="position: absolute; top: 0; left: 0">Text</div>');
        this.$container.append($div);
        selectElementText($div[0], 1);

        mouseDown($div);

        var sel = getSelected();
        expect(sel).toEqual(false);
      });

      it('should disallow fragmentSelection of Handsontable chrome (anything that is not table) when set to true', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: true
        });
        var $div = $('<div style="position: absolute; top: 0; left: 0">Text</div>');
        this.$container.append($div);
        selectElementText($div[0], 1);

        mouseDown($div);

        var sel = getSelected();
        expect(sel).toEqual(false);
      });
    });

    describe('dynamic', () => {
      it('should disallow fragmentSelection when set to false', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: true
        });
        updateSettings({fragmentSelection: false});
        selectElementText(this.$container.find('tr:eq(0) td:eq(1)')[0], 3);

        mouseDown(this.$container.find('tr:eq(0) td:eq(3)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(3)'));

        var sel = getSelected();
        expect(sel).toEqual(false);
      });

      it('should allow fragmentSelection when set to true', function() {
        handsontable({
          data: Handsontable.helper.createSpreadsheetData(4, 4),
          fragmentSelection: false
        });
        updateSettings({fragmentSelection: true});
        selectElementText(this.$container.find('td')[1], 3);

        mouseDown(this.$container.find('tr:eq(0) td:eq(3)'));
        mouseUp(this.$container.find('tr:eq(0) td:eq(3)'));

        var sel = getSelected();
        sel = sel.replace(/\s/g, ''); // tabs and spaces between <td>s are inconsistent in browsers, so let's ignore them
        expect(sel).toEqual('B1C1D1');
      });
    });
  });
});